Method for making a metal material composite

Abstract

A method for making a metal material composite includes: contacting a first surface of a first plate with a second surface of a second plate; placing the first plate and the second plate in a recess in a circumferential direction of a first roller such that a third surface of the second plate contacts a bottom wall of the recess in a circumferential, the third surface being opposite the second surface, the first plate having a greater hardness than the second plate; and controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, where a fourth surface of the first plate contacts a surface of the second roller and the fourth surface is opposite the first surface during the rolling.

The invention claimed is: 
     
       1. A method for making a metal material composite, characterized by comprising:
 contacting a first surface of a first plate with a second surface of a second plate; 
 placing the first plate and the second plate in a recess in a circumferential direction of a first roller such that a third surface of the second plate contacts a bottom wall of the recess, wherein the third surface is opposite the second surface, and the first plate has a greater hardness than the second plate; and 
 controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, wherein a fourth surface of the first plate contacts a surface of the second roller, and the fourth surface is opposite the first surface during the rolling, wherein before contacting a first surface of a first plate with a second surface of a second plate, at least one of the first surface and the second surface is roughened so that at least one of the first surface and the second surface is provided with a plurality of striations, a pitch is provided between adjacent striations, and a number of the striations of which every two adjacent ones are distanced by a preset pitch is configured to be greater than or equal to a preset proportion of a total number of the striations. 
 
     
     
       2. The method for making a metal material composite according to  claim 1 , wherein in the step of roughening the first surface, the preset pitch between the adjacent striations of the first surface is 0.005 mm to 0.03 mm, and the preset proportion is 90%. 
     
     
       3. The method for making a metal material composite according to  claim 1 , wherein in the step of roughening the first surface, the preset pitch between the adjacent striations of the first surface is 0.01 mm to 0.02 mm, and the preset proportion is 90%. 
     
     
       4. The method for making a metal material composite according to  claim 1 , wherein in the step of roughening the first surface, the preset pitch between the adjacent striations of the first surface is 0.01 mm to 0.02 mm, and the preset proportion is 80%. 
     
     
       5. The method for making a metal material composite according to  claim 1 , wherein in the step of roughening the first surface, the preset pitch between the adjacent striations of the first surface is 0.01 mm to 0.02 mm, and the preset proportion is 70%. 
     
     
       6. The method for making a metal material composite according to  claim 1 , wherein in the step of roughening the first surface, the preset pitch between the adjacent striations of the first surface is 0.01 mm to 0.02 mm, and the preset proportion is 50%. 
     
     
       7. The method for making a metal material composite according to  claim 1 , wherein in the step of roughening at least one of the first surface and the second surface, the striations are formed by rubbing at least one of the first surface and the second surface with a roughening friction roller, wherein the roughening friction roller comprises a steel wire brush roller, the steel wire brush roller is subjected to a pressure of 1 MPa to 1.5 MPa during operation, a diameter of the steel brush roller is 250 mm to 400 mm, the steel wire brush roller rotates at 400 r/min to 600 r/min, a hardness of a brush wire of the steel wire brush roller is HRC55 to HRC60, a length of the brush wire is 10 mm to 40 mm, and a diameter of the brush wire is 0.3 mm to 0.5 mm. 
     
     
       8. The method for making a metal material composite according to  claim 1 , wherein in the step of roughening at least one of the first surface and the second surface, the striations are formed by rubbing at least one of the first surface and the second surface with the roughening friction roller, wherein the roughening friction roller comprises a grinding wheel, a mesh number of the grinding wheel is 40 to 120, the grinding wheel is subjected to a pressure of 0.1 MPa to 0.5 MPa during operation, and a diameter of the grinding wheel is 200 mm to 400 mm. 
     
     
       9. The method for making a metal material composite according to  claim 1 , wherein the step of roughening the first surface comprises: removing debris from the first surface; and
 the step of roughening the second surface comprises: removing debris from the second surface. 
 
     
     
       10. The method for making a metal material composite according to  claim 1 , wherein the step of roughening the first surface comprises:
 acquiring a number of the striations per unit area of the first surface, and 
 determining that the number of the striations per unit area of the first surface is smaller than a corresponding preset value, and adjusting a position of the roughening friction roller for roughening treatment so that the roughening friction roller fully contacts the first surface; and 
 the step of roughening the second surface comprises: 
 acquiring a number of the striations per unit area of the second surface, and 
 determining that the number of the striations per unit area of the second surface is smaller than a corresponding preset value, and adjusting a position of the roughening friction roller for roughening treatment so that the roughening friction roller fully contacts the second surface. 
 
     
     
       11. The method for making a metal material composite according to  claim 1 , before the step of controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, further comprising:
 heating the first plate and the second plate to a preset temperature. 
 
     
     
       12. The method for making a metal material composite according to  claim 1 , after the step of controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, further comprising:
 subjecting the composite plate to a solid solution treatment; and 
 subjecting the composite plate to an aging treatment after the solid solution treatment. 
 
     
     
       13. The method for making a metal material composite according to  claim 12 , wherein the solid solution treatment is performed at 480° C. to 540° C. for 45 min to 65 min;
 the aging treatment is performed at 160° C. to 200° C. for 5 h to 7 h. 
 
     
     
       14. The method for making a metal material composite according to  claim 1 , wherein before the step of contacting the first surface of the first plate with the second surface of the second plate,
 a roughness of the first surface is prefabricated to be 0.8 Ra to 4.0 Ra. 
 
     
     
       15. The method for making a metal material composite according to  claim 1 , wherein before the step of contacting the first surface of the first plate with the second surface of the second plate,
 a roughness of the second surface is prefabricated to be 4 Ra to 10 Ra. 
 
     
     
       16. The method for making a metal material composite according to  claim 1 , wherein the first plate is a stainless steel plate, and the second plate is an aluminum plate. 
     
     
       17. The method for making a metal material composite according to  claim 1 , wherein before the step of roughening the first surface, the first plate is prefabricated to have an elongated shape:
 in the step of roughening the first surface, controlling the intersection angle between the length direction of the striations of the first surface and the width direction of the first plate to form the first preset intersection angle; and 
 before the step of roughening the second surface, the second plate is prefabricated to have an elongated shape; 
 in the step of roughening the second surface, controlling the intersection angle between the length direction of the striations of the second surface and the width direction of the second plate to form the second preset intersection angle. 
 
     
     
       18. A method for making a metal material composite characterized by comprising:
 contacting a first surface of a first plate with a second surface of a second plate; 
 placing the first plate and the second plate in a recess in a circumferential direction of a first roller such that a third surface of the second plate contacts a bottom wall of the recess, wherein the third surface is opposite the second surface, and the first plate has a greater hardness than the second plate; and 
 controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, wherein a fourth surface of the first plate contacts a surface of the second roller, and the fourth surface is opposite the first surface during the rolling; 
 wherein before the step of contacting the first surface of the first plate with the second surface of the second plate, prefabricating the first plate and the second plate in a thickness ratio of 1.5:1.0; and 
 wherein in the step of controlling the first roller and the second roller to rotate, thereby rolling to combine the first plate and the second plate into the composite plate, controlling a differential speed ratio of the first roller to the second roller to be 1:1.05, and a reduction rate of rolling to be 20% to 40%. 
 
     
     
       19. A method for making a metal material composite, characterized by comprising:
 contacting a first surface of a first plate with a second surface of a second plate; 
 placing the first plate and the second plate in a recess in a circumferential direction of a first roller such that a third surface of the second plate contacts a bottom wall of the recess, wherein the third surface is opposite the second surface, and the first plate has a greater hardness than the second plate; and 
 controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, wherein a fourth surface of the first plate contacts a surface of the second roller, and the fourth surface is opposite the first surface during the rolling, wherein in the step of controlling the first roller and the second roller to roll and combine the first plate and the second plate into the composite plate, 
 a shear strength τ=a*b*K1*K2*σ soft  is obtained for the composite plate, 
 wherein a is a length of the first plate, b is a width of the first plate, K1 is a roughened area ratio of the first plate, and a value range of K1 is 1.5 to 3; K2 is a degree of bonding between the first plate and the second plate, a value range of K2 is 0.15 to 0.3, and when K1*K2>1, a product of K1 and K2 takes a value of 1; the σ soft  is a yield strength of the second plate, and a value range of the σ soft  is 350 MPa to 412 MPa.